mubarak. jeffrey brown has our story. >> brown: political violence ravaged egypt for a fifth day after a weekend that saw more than 50 people killed. in cairo, protestors threw rocks and gasoline bombs at riot police. police in turn fired tear gas into the crowds who oppose president mohammed morsi and his islamist dominated government. >> what's happening here in the country is really shameful. destroying the city is not fair. but at the same time the way the police treat people makes tensions heavier because all decisions by morsi's government have been taken out of the public interest. >> brown: security officials said a man described as a by-stander was killed by a gunshot. it was unclear who fired it. and government tanks were on the streets in the cities of suez and port said. they enforced a curfew that an angry president morsi announced last night. >> to end the bloodshed, to maintain security against vandals and law breakers and for the protection of citizens, i have decided after ref